OpenAltimetry - rapid analysis and visualization of Spaceborne altimeter data
Tóm tắt
NASA’s Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) carries a laser altimeter that fires 10,000 pulses per second towards Earth and records the travel time of individual photons to measure the elevation of the surface below. The volume of data produced by ICESat-2, nearly a TB per day, presents significant challenges for users wishing to efficiently explore the dataset. NASA’s National Snow and Ice Data Center (NSIDC) Distributed Active Archive Center (DAAC), which is responsible for archiving and distributing ICESat-2 data, provides search and subsetting services on mission data products, but providing interactive data discovery and visualization tools needed to assess data coverage and quality in a given area of interest is outside of NSIDC’s mandate. The OpenAltimetry project, a NASA-funded collaboration between NSIDC, UNAVCO and the University of California San Diego, has developed a web-based cyberinfrastructure platform that allows users to locate, visualize, and download ICESat-2 surface elevation data and photon clouds for any location on Earth, on demand. OpenAltimetry also provides access to elevations and waveforms for ICESat (the predecessor mission to ICESat-2). In addition, OpenAltimetry enables data access via APIs, opening opportunities for rapid access, experimentation, and computation via third party applications like Jupyter notebooks. OpenAltimetry emphasizes ease-of-use for new users and rapid access to entire altimetry datasets for experts and has been successful in meeting the needs of different user groups. In this paper we describe the principles that guided the design and development of the OpenAltimetry platform and provide a high-level overview of the cyberinfrastructure components of the system.
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Tài liệu tham khảo
Atkins, D., Droegemeier, K., Feldman, S., Garcia-Molina, H., Klein, M., Messerschmitt, D., Messina, P., Ostriker, J., Wright, M. (2003). Revolutionizing science and engineering through Cyberinfrastructure. Report of the National Science Foundation Blue-Ribbon Advisory Panel on Cyberinfrastructure, January
Borsa AA, Fricker HA, Brunt KM (2019) A terrestrial validation of ICESat elevation measurements and implications for global Reanalyses. IEEE Trans Geosci Remote Sens 57(9):6946–6959
Earth Observing System Data and Information System (EOSDIS). (2009). Earth Observing System ClearingHOuse (ECHO) / Reverb, [retired online application]. Greenbelt, MD: EOSDIS, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL: http://reverb.earthdata.nasa.gov
Crosby, C.J., Arrowsmith, J.R. and Nandigam, V. (2020). Zero to a trillion: advancing earth surface process studies with open access to high-resolution topography. In Developments in Earth Surface Processes (Vol. 23, pp. 317-338). Elsevier
Kavvada A, Metternicht G, Kerblat F, Mudau N, Haldorson M, Laldaparsad S, Friedl L, Held A, Chuvieco E (2020) Towards delivering on the sustainable development goals using earth observations. Remote Sens Environ 247:111930. https://doi.org/10.1016/j.rse.2020.111930
Markus T, Neumann T, Martino A, Abdalati W, Brunt K, Csatho B, Farrell S, Fricker H, Gardner A, Harding D, Jasinski M (2017) The ice, cloud, and land elevation Satellite-2 (ICESat-2): science requirements, concept, and implementation. Remote Sens Environ 190:260–273
Mcintyre RA (2014) Overcoming “The Valley of Death.”. Sci Prog 97(3):234–248. https://doi.org/10.3184/003685014X14079421402720
Murphy, K.J., Davies, D.K., Michael, K., Justice, C.O., Schmaltz, J.E., Boller, R., McLemore, B.D., Ding, F., Vollmer, B. and Wong, M.M. (2015). LANCE, NASA’s land, atmosphere near real-time capability for EOS. In Time-Sensitive Remote Sensing (pp. 113–127). Springer, New York, NY